Most of the code in rust-analyzer.el has been integrated into emacs-lsp for some time, but currently we still have the separate (and slightly different) copy in the RA repo. They've proposed doing the primary development of the Emacs integration there, and I think I agree; there'd be more reviewers with experience in Emacs lisp there, and it'd make the installation instructions for Emacs easier as well. @matklad unless you object, I'll remove most of the code in rust-analyzer.el and update the instructions